<code>/Users/<your_user_name>/Library/Application Support/SCS Workshop Uploader/validation.log.txt</code>
Where `%user_name%` <code><your_user_name></code> is your user name.
On the [[Documentation/Tools/SCS_Workshop_Uploader/Warning_and_error_codes|Validation warning and error codes]] page you can find error and warning codes that may be helpful in finding why the validation failed.